./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:24:11,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:24:11,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:24:11,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:24:11,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:24:11,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:24:11,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:24:11,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:24:11,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:24:11,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:24:11,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:24:11,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:24:11,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:24:11,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:24:11,856 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:24:11,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:24:11,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:24:11,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:24:11,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:24:11,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:24:11,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:24:11,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:24:11,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:24:11,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:24:11,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:24:11,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:24:11,881 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:24:11,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:24:11,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:24:11,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:24:11,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:24:11,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:24:11,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:24:11,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:24:11,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:24:11,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:24:11,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:24:11,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:24:11,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:24:11,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:24:11,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:24:11,894 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-11-25 18:24:11,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:24:11,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:24:11,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:24:11,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:24:11,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:24:11,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:24:11,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:24:11,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:24:11,926 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:24:11,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:24:11,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:24:11,927 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:24:11,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:24:11,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:24:11,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:24:11,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:24:11,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:24:11,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:24:11,929 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-25 18:24:11,929 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:24:11,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:24:11,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:24:11,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:24:11,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:24:11,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:24:11,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:24:11,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:24:11,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:24:11,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:24:11,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:24:11,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:24:11,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:24:11,932 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:24:11,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:24:11,933 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:24:11,933 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:24:11,935 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e9feb6929ab81158cc9d6731414a71af210f92cb571da2954e02689fee6d2b [2022-11-25 18:24:12,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:24:12,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:24:12,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:24:12,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:24:12,354 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:24:12,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2022-11-25 18:24:15,988 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:24:16,418 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:24:16,421 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i [2022-11-25 18:24:16,437 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/data/4e7987e6a/1fc8a75ed32a4fc38ef4f00b6c7d06fe/FLAG98ecba007 [2022-11-25 18:24:16,467 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/data/4e7987e6a/1fc8a75ed32a4fc38ef4f00b6c7d06fe [2022-11-25 18:24:16,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:24:16,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:24:16,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:24:16,480 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:24:16,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:24:16,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:24:16" (1/1) ... [2022-11-25 18:24:16,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@514aa14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:16, skipping insertion in model container [2022-11-25 18:24:16,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:24:16" (1/1) ... [2022-11-25 18:24:16,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:24:16,550 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:24:16,735 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:24:17,163 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-11-25 18:24:17,168 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-11-25 18:24:17,169 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-11-25 18:24:17,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:24:17,198 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:24:17,226 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-25 18:24:17,293 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39095,39108] [2022-11-25 18:24:17,294 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39180,39193] [2022-11-25 18:24:17,295 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/sv-benchmarks/c/pthread-divine/ring_1w1r-2.i[39232,39245] [2022-11-25 18:24:17,300 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:24:17,352 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:24:17,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17 WrapperNode [2022-11-25 18:24:17,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:24:17,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:24:17,355 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:24:17,355 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:24:17,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (1/1) ... [2022-11-25 18:24:17,412 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (1/1) ... [2022-11-25 18:24:17,477 INFO L138 Inliner]: procedures = 224, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 220 [2022-11-25 18:24:17,478 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:24:17,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:24:17,479 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:24:17,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:24:17,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (1/1) ... [2022-11-25 18:24:17,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (1/1) ... [2022-11-25 18:24:17,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (1/1) ... [2022-11-25 18:24:17,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (1/1) ... [2022-11-25 18:24:17,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (1/1) ... [2022-11-25 18:24:17,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (1/1) ... [2022-11-25 18:24:17,571 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (1/1) ... [2022-11-25 18:24:17,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (1/1) ... [2022-11-25 18:24:17,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:24:17,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:24:17,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:24:17,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:24:17,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (1/1) ... [2022-11-25 18:24:17,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:24:17,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:24:17,632 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:24:17,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c84b92f4-22cb-4344-9174-247e3fa45b77/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:24:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure reader_fn [2022-11-25 18:24:17,692 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_fn [2022-11-25 18:24:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:24:17,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:24:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:24:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:24:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:24:17,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:24:17,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:24:17,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:24:17,696 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:24:17,939 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:24:17,942 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:24:18,586 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:24:18,596 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:24:18,596 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-25 18:24:18,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:24:18 BoogieIcfgContainer [2022-11-25 18:24:18,612 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:24:18,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:24:18,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:24:18,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:24:18,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:24:16" (1/3) ... [2022-11-25 18:24:18,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccd927a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:24:18, skipping insertion in model container [2022-11-25 18:24:18,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:24:17" (2/3) ... [2022-11-25 18:24:18,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccd927a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:24:18, skipping insertion in model container [2022-11-25 18:24:18,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:24:18" (3/3) ... [2022-11-25 18:24:18,623 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_1w1r-2.i [2022-11-25 18:24:18,635 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:24:18,647 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:24:18,648 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-11-25 18:24:18,648 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:24:18,771 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-25 18:24:18,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 267 transitions, 542 flow [2022-11-25 18:24:19,044 INFO L130 PetriNetUnfolder]: 10/266 cut-off events. [2022-11-25 18:24:19,046 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 18:24:19,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 266 events. 10/266 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 535 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 209. Up to 2 conditions per place. [2022-11-25 18:24:19,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 267 transitions, 542 flow [2022-11-25 18:24:19,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 257 transitions, 517 flow [2022-11-25 18:24:19,075 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:24:19,094 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 257 transitions, 517 flow [2022-11-25 18:24:19,098 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 257 transitions, 517 flow [2022-11-25 18:24:19,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 257 transitions, 517 flow [2022-11-25 18:24:19,172 INFO L130 PetriNetUnfolder]: 10/257 cut-off events. [2022-11-25 18:24:19,173 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:24:19,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 257 events. 10/257 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 471 event pairs, 0 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 209. Up to 2 conditions per place. [2022-11-25 18:24:19,189 INFO L119 LiptonReduction]: Number of co-enabled transitions 21228 [2022-11-25 18:24:36,507 INFO L134 LiptonReduction]: Checked pairs total: 136693 [2022-11-25 18:24:36,507 INFO L136 LiptonReduction]: Total number of compositions: 175 [2022-11-25 18:24:36,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:24:36,537 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2f4e24e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:24:36,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-11-25 18:24:36,539 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-11-25 18:24:36,540 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:24:36,541 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:36,542 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-11-25 18:24:36,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-25 18:24:36,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:36,557 INFO L85 PathProgramCache]: Analyzing trace with hash 906, now seen corresponding path program 1 times [2022-11-25 18:24:36,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:36,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298385770] [2022-11-25 18:24:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:36,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:36,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:36,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:36,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298385770] [2022-11-25 18:24:36,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298385770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:36,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:36,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-25 18:24:36,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230194950] [2022-11-25 18:24:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:36,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:24:36,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:36,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:24:36,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:24:36,811 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 442 [2022-11-25 18:24:36,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 237 flow. Second operand has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:36,820 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:36,820 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 442 [2022-11-25 18:24:36,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:37,122 INFO L130 PetriNetUnfolder]: 137/792 cut-off events. [2022-11-25 18:24:37,122 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:24:37,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1043 conditions, 792 events. 137/792 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 4737 event pairs, 87 based on Foata normal form. 21/701 useless extension candidates. Maximal degree in co-relation 1034. Up to 247 conditions per place. [2022-11-25 18:24:37,133 INFO L137 encePairwiseOnDemand]: 438/442 looper letters, 24 selfloop transitions, 0 changer transitions 0/113 dead transitions. [2022-11-25 18:24:37,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 113 transitions, 277 flow [2022-11-25 18:24:37,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:24:37,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-25 18:24:37,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 546 transitions. [2022-11-25 18:24:37,154 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6176470588235294 [2022-11-25 18:24:37,155 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 546 transitions. [2022-11-25 18:24:37,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 546 transitions. [2022-11-25 18:24:37,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:37,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 546 transitions. [2022-11-25 18:24:37,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 273.0) internal successors, (546), 2 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:37,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:37,180 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 442.0) internal successors, (1326), 3 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:37,182 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 237 flow. Second operand 2 states and 546 transitions. [2022-11-25 18:24:37,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 113 transitions, 277 flow [2022-11-25 18:24:37,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 276 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:24:37,191 INFO L231 Difference]: Finished difference. Result has 113 places, 113 transitions, 228 flow [2022-11-25 18:24:37,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=228, PETRI_PLACES=113, PETRI_TRANSITIONS=113} [2022-11-25 18:24:37,198 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, -2 predicate places. [2022-11-25 18:24:37,199 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 113 transitions, 228 flow [2022-11-25 18:24:37,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 259.5) internal successors, (519), 2 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:37,200 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:37,200 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:37,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:24:37,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-25 18:24:37,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash 543425767, now seen corresponding path program 1 times [2022-11-25 18:24:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:37,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949416136] [2022-11-25 18:24:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:37,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:37,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:37,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949416136] [2022-11-25 18:24:37,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949416136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:37,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:37,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:24:37,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100194181] [2022-11-25 18:24:37,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:37,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:24:37,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:24:37,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:24:37,511 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 442 [2022-11-25 18:24:37,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 113 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:37,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:37,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 442 [2022-11-25 18:24:37,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:37,888 INFO L130 PetriNetUnfolder]: 252/1387 cut-off events. [2022-11-25 18:24:37,889 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:24:37,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1841 conditions, 1387 events. 252/1387 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 9044 event pairs, 126 based on Foata normal form. 0/1199 useless extension candidates. Maximal degree in co-relation 1838. Up to 248 conditions per place. [2022-11-25 18:24:37,928 INFO L137 encePairwiseOnDemand]: 439/442 looper letters, 42 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2022-11-25 18:24:37,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 133 transitions, 356 flow [2022-11-25 18:24:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:24:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:24:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2022-11-25 18:24:37,940 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6108597285067874 [2022-11-25 18:24:37,940 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2022-11-25 18:24:37,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2022-11-25 18:24:37,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:37,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2022-11-25 18:24:37,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:37,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:37,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 442.0) internal successors, (1768), 4 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:37,954 INFO L175 Difference]: Start difference. First operand has 113 places, 113 transitions, 228 flow. Second operand 3 states and 810 transitions. [2022-11-25 18:24:37,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 133 transitions, 356 flow [2022-11-25 18:24:37,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 133 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:24:37,958 INFO L231 Difference]: Finished difference. Result has 116 places, 114 transitions, 240 flow [2022-11-25 18:24:37,959 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=116, PETRI_TRANSITIONS=114} [2022-11-25 18:24:37,960 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 1 predicate places. [2022-11-25 18:24:37,960 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 114 transitions, 240 flow [2022-11-25 18:24:37,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:37,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:37,962 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:37,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 18:24:37,963 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-25 18:24:37,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:37,970 INFO L85 PathProgramCache]: Analyzing trace with hash -827842314, now seen corresponding path program 1 times [2022-11-25 18:24:37,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:37,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053370012] [2022-11-25 18:24:37,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:37,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:38,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:38,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053370012] [2022-11-25 18:24:38,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053370012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:38,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:38,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775569146] [2022-11-25 18:24:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:38,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:24:38,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:38,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:24:38,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:24:39,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 442 [2022-11-25 18:24:39,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 114 transitions, 240 flow. Second operand has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:39,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:39,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 442 [2022-11-25 18:24:39,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:41,011 INFO L130 PetriNetUnfolder]: 1873/5824 cut-off events. [2022-11-25 18:24:41,012 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-25 18:24:41,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9408 conditions, 5824 events. 1873/5824 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 46330 event pairs, 467 based on Foata normal form. 0/5145 useless extension candidates. Maximal degree in co-relation 9403. Up to 2038 conditions per place. [2022-11-25 18:24:41,048 INFO L137 encePairwiseOnDemand]: 418/442 looper letters, 105 selfloop transitions, 33 changer transitions 0/199 dead transitions. [2022-11-25 18:24:41,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 199 transitions, 686 flow [2022-11-25 18:24:41,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:24:41,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:24:41,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1448 transitions. [2022-11-25 18:24:41,054 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5460030165912518 [2022-11-25 18:24:41,055 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1448 transitions. [2022-11-25 18:24:41,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1448 transitions. [2022-11-25 18:24:41,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:41,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1448 transitions. [2022-11-25 18:24:41,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 241.33333333333334) internal successors, (1448), 6 states have internal predecessors, (1448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:41,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:41,069 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:41,069 INFO L175 Difference]: Start difference. First operand has 116 places, 114 transitions, 240 flow. Second operand 6 states and 1448 transitions. [2022-11-25 18:24:41,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 199 transitions, 686 flow [2022-11-25 18:24:41,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 199 transitions, 684 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:24:41,075 INFO L231 Difference]: Finished difference. Result has 125 places, 146 transitions, 480 flow [2022-11-25 18:24:41,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=480, PETRI_PLACES=125, PETRI_TRANSITIONS=146} [2022-11-25 18:24:41,077 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 10 predicate places. [2022-11-25 18:24:41,077 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 146 transitions, 480 flow [2022-11-25 18:24:41,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 219.5) internal successors, (1317), 6 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:41,079 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:41,079 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:41,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 18:24:41,080 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-25 18:24:41,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:41,080 INFO L85 PathProgramCache]: Analyzing trace with hash -554609042, now seen corresponding path program 1 times [2022-11-25 18:24:41,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:41,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402088892] [2022-11-25 18:24:41,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:41,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:41,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:41,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:41,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402088892] [2022-11-25 18:24:41,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402088892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:41,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:41,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:41,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915243809] [2022-11-25 18:24:41,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:41,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:24:41,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:41,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:24:41,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:24:42,302 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 442 [2022-11-25 18:24:42,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 146 transitions, 480 flow. Second operand has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:42,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:42,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 442 [2022-11-25 18:24:42,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:44,108 INFO L130 PetriNetUnfolder]: 1964/7318 cut-off events. [2022-11-25 18:24:44,108 INFO L131 PetriNetUnfolder]: For 1248/1316 co-relation queries the response was YES. [2022-11-25 18:24:44,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13663 conditions, 7318 events. 1964/7318 cut-off events. For 1248/1316 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 63285 event pairs, 274 based on Foata normal form. 14/6715 useless extension candidates. Maximal degree in co-relation 13654. Up to 2369 conditions per place. [2022-11-25 18:24:44,166 INFO L137 encePairwiseOnDemand]: 419/442 looper letters, 110 selfloop transitions, 57 changer transitions 0/248 dead transitions. [2022-11-25 18:24:44,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 248 transitions, 1116 flow [2022-11-25 18:24:44,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:24:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:24:44,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1472 transitions. [2022-11-25 18:24:44,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.555052790346908 [2022-11-25 18:24:44,175 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1472 transitions. [2022-11-25 18:24:44,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1472 transitions. [2022-11-25 18:24:44,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:44,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1472 transitions. [2022-11-25 18:24:44,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.33333333333334) internal successors, (1472), 6 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:44,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:44,191 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:44,192 INFO L175 Difference]: Start difference. First operand has 125 places, 146 transitions, 480 flow. Second operand 6 states and 1472 transitions. [2022-11-25 18:24:44,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 248 transitions, 1116 flow [2022-11-25 18:24:44,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 248 transitions, 1116 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:24:44,214 INFO L231 Difference]: Finished difference. Result has 135 places, 201 transitions, 938 flow [2022-11-25 18:24:44,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=938, PETRI_PLACES=135, PETRI_TRANSITIONS=201} [2022-11-25 18:24:44,219 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 20 predicate places. [2022-11-25 18:24:44,219 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 201 transitions, 938 flow [2022-11-25 18:24:44,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:44,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:44,221 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:44,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:24:44,222 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-25 18:24:44,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:44,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1563815534, now seen corresponding path program 1 times [2022-11-25 18:24:44,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:44,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133288558] [2022-11-25 18:24:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:44,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:44,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:44,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:44,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133288558] [2022-11-25 18:24:44,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133288558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:44,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:44,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:44,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63787750] [2022-11-25 18:24:44,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:44,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:24:44,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:44,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:24:44,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:24:45,704 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 442 [2022-11-25 18:24:45,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 201 transitions, 938 flow. Second operand has 6 states, 6 states have (on average 236.5) internal successors, (1419), 6 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:45,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:45,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 442 [2022-11-25 18:24:45,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:47,762 INFO L130 PetriNetUnfolder]: 2287/8517 cut-off events. [2022-11-25 18:24:47,762 INFO L131 PetriNetUnfolder]: For 5062/5199 co-relation queries the response was YES. [2022-11-25 18:24:47,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19237 conditions, 8517 events. 2287/8517 cut-off events. For 5062/5199 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 77080 event pairs, 351 based on Foata normal form. 28/7795 useless extension candidates. Maximal degree in co-relation 19223. Up to 2575 conditions per place. [2022-11-25 18:24:47,842 INFO L137 encePairwiseOnDemand]: 430/442 looper letters, 146 selfloop transitions, 59 changer transitions 0/316 dead transitions. [2022-11-25 18:24:47,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 316 transitions, 1876 flow [2022-11-25 18:24:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:24:47,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:24:47,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1518 transitions. [2022-11-25 18:24:47,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5723981900452488 [2022-11-25 18:24:47,848 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1518 transitions. [2022-11-25 18:24:47,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1518 transitions. [2022-11-25 18:24:47,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:47,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1518 transitions. [2022-11-25 18:24:47,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.0) internal successors, (1518), 6 states have internal predecessors, (1518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:47,862 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:47,863 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:47,864 INFO L175 Difference]: Start difference. First operand has 135 places, 201 transitions, 938 flow. Second operand 6 states and 1518 transitions. [2022-11-25 18:24:47,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 316 transitions, 1876 flow [2022-11-25 18:24:47,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 316 transitions, 1876 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:24:47,899 INFO L231 Difference]: Finished difference. Result has 145 places, 260 transitions, 1608 flow [2022-11-25 18:24:47,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1608, PETRI_PLACES=145, PETRI_TRANSITIONS=260} [2022-11-25 18:24:47,902 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 30 predicate places. [2022-11-25 18:24:47,903 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 260 transitions, 1608 flow [2022-11-25 18:24:47,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 236.5) internal successors, (1419), 6 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:47,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:47,904 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:47,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 18:24:47,905 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reader_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-25 18:24:47,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1375654251, now seen corresponding path program 1 times [2022-11-25 18:24:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:47,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837494415] [2022-11-25 18:24:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:47,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:48,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:48,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837494415] [2022-11-25 18:24:48,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837494415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:48,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:48,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:48,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397676540] [2022-11-25 18:24:48,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:48,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:24:48,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:48,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:24:48,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:24:49,131 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 442 [2022-11-25 18:24:49,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 260 transitions, 1608 flow. Second operand has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:49,133 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:49,133 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 442 [2022-11-25 18:24:49,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:51,913 INFO L130 PetriNetUnfolder]: 3026/10608 cut-off events. [2022-11-25 18:24:51,914 INFO L131 PetriNetUnfolder]: For 11887/12343 co-relation queries the response was YES. [2022-11-25 18:24:51,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26300 conditions, 10608 events. 3026/10608 cut-off events. For 11887/12343 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 98029 event pairs, 286 based on Foata normal form. 141/9858 useless extension candidates. Maximal degree in co-relation 26281. Up to 3380 conditions per place. [2022-11-25 18:24:51,999 INFO L137 encePairwiseOnDemand]: 418/442 looper letters, 197 selfloop transitions, 116 changer transitions 0/408 dead transitions. [2022-11-25 18:24:52,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 408 transitions, 3060 flow [2022-11-25 18:24:52,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:24:52,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:24:52,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1468 transitions. [2022-11-25 18:24:52,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5535444947209653 [2022-11-25 18:24:52,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1468 transitions. [2022-11-25 18:24:52,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1468 transitions. [2022-11-25 18:24:52,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:52,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1468 transitions. [2022-11-25 18:24:52,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.66666666666666) internal successors, (1468), 6 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:52,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:52,018 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:52,018 INFO L175 Difference]: Start difference. First operand has 145 places, 260 transitions, 1608 flow. Second operand 6 states and 1468 transitions. [2022-11-25 18:24:52,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 408 transitions, 3060 flow [2022-11-25 18:24:52,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 408 transitions, 3060 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:24:52,062 INFO L231 Difference]: Finished difference. Result has 155 places, 356 transitions, 2796 flow [2022-11-25 18:24:52,063 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=1608, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2796, PETRI_PLACES=155, PETRI_TRANSITIONS=356} [2022-11-25 18:24:52,067 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 40 predicate places. [2022-11-25 18:24:52,067 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 356 transitions, 2796 flow [2022-11-25 18:24:52,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 224.5) internal successors, (1347), 6 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:52,073 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:52,073 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:52,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:24:52,074 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting reader_fnErr2ASSERT_VIOLATIONDATA_RACE === [reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-25 18:24:52,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:52,074 INFO L85 PathProgramCache]: Analyzing trace with hash -164314146, now seen corresponding path program 1 times [2022-11-25 18:24:52,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:52,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015591737] [2022-11-25 18:24:52,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:52,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:52,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:52,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015591737] [2022-11-25 18:24:52,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015591737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:52,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:52,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:52,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993124213] [2022-11-25 18:24:52,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:52,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:24:52,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:52,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:24:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:24:53,313 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 442 [2022-11-25 18:24:53,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 356 transitions, 2796 flow. Second operand has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:53,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:53,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 442 [2022-11-25 18:24:53,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:56,156 INFO L130 PetriNetUnfolder]: 4085/12967 cut-off events. [2022-11-25 18:24:56,156 INFO L131 PetriNetUnfolder]: For 29402/30116 co-relation queries the response was YES. [2022-11-25 18:24:56,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39003 conditions, 12967 events. 4085/12967 cut-off events. For 29402/30116 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 120710 event pairs, 454 based on Foata normal form. 240/12438 useless extension candidates. Maximal degree in co-relation 38979. Up to 4942 conditions per place. [2022-11-25 18:24:56,272 INFO L137 encePairwiseOnDemand]: 421/442 looper letters, 285 selfloop transitions, 152 changer transitions 0/536 dead transitions. [2022-11-25 18:24:56,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 536 transitions, 5054 flow [2022-11-25 18:24:56,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:24:56,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:24:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1476 transitions. [2022-11-25 18:24:56,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5565610859728507 [2022-11-25 18:24:56,279 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1476 transitions. [2022-11-25 18:24:56,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1476 transitions. [2022-11-25 18:24:56,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:56,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1476 transitions. [2022-11-25 18:24:56,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 246.0) internal successors, (1476), 6 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:56,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:56,294 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:56,294 INFO L175 Difference]: Start difference. First operand has 155 places, 356 transitions, 2796 flow. Second operand 6 states and 1476 transitions. [2022-11-25 18:24:56,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 536 transitions, 5054 flow [2022-11-25 18:24:56,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 536 transitions, 5054 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:24:56,383 INFO L231 Difference]: Finished difference. Result has 165 places, 482 transitions, 4694 flow [2022-11-25 18:24:56,384 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4694, PETRI_PLACES=165, PETRI_TRANSITIONS=482} [2022-11-25 18:24:56,384 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 50 predicate places. [2022-11-25 18:24:56,385 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 482 transitions, 4694 flow [2022-11-25 18:24:56,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 225.83333333333334) internal successors, (1355), 6 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:56,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:56,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:24:56,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 18:24:56,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-25 18:24:56,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:56,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2097473995, now seen corresponding path program 1 times [2022-11-25 18:24:56,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:24:56,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167581172] [2022-11-25 18:24:56,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:56,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:24:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:57,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:24:57,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167581172] [2022-11-25 18:24:57,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167581172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:57,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:57,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:24:57,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668038112] [2022-11-25 18:24:57,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:57,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:24:57,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:24:57,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:24:57,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:24:57,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 442 [2022-11-25 18:24:57,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 482 transitions, 4694 flow. Second operand has 6 states, 6 states have (on average 186.83333333333334) internal successors, (1121), 6 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:57,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:57,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 442 [2022-11-25 18:24:57,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:25:05,438 INFO L130 PetriNetUnfolder]: 12892/28437 cut-off events. [2022-11-25 18:25:05,438 INFO L131 PetriNetUnfolder]: For 64224/64644 co-relation queries the response was YES. [2022-11-25 18:25:05,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98537 conditions, 28437 events. 12892/28437 cut-off events. For 64224/64644 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 238765 event pairs, 6635 based on Foata normal form. 82/26962 useless extension candidates. Maximal degree in co-relation 98508. Up to 24012 conditions per place. [2022-11-25 18:25:05,693 INFO L137 encePairwiseOnDemand]: 404/442 looper letters, 446 selfloop transitions, 196 changer transitions 0/679 dead transitions. [2022-11-25 18:25:05,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 679 transitions, 6944 flow [2022-11-25 18:25:05,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:25:05,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:25:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1358 transitions. [2022-11-25 18:25:05,700 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5120663650075414 [2022-11-25 18:25:05,701 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1358 transitions. [2022-11-25 18:25:05,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1358 transitions. [2022-11-25 18:25:05,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:25:05,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1358 transitions. [2022-11-25 18:25:05,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 226.33333333333334) internal successors, (1358), 6 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:05,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:05,714 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:05,714 INFO L175 Difference]: Start difference. First operand has 165 places, 482 transitions, 4694 flow. Second operand 6 states and 1358 transitions. [2022-11-25 18:25:05,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 679 transitions, 6944 flow [2022-11-25 18:25:05,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 679 transitions, 6944 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 18:25:05,995 INFO L231 Difference]: Finished difference. Result has 174 places, 627 transitions, 6122 flow [2022-11-25 18:25:05,996 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=4694, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6122, PETRI_PLACES=174, PETRI_TRANSITIONS=627} [2022-11-25 18:25:05,998 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 59 predicate places. [2022-11-25 18:25:05,999 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 627 transitions, 6122 flow [2022-11-25 18:25:06,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 186.83333333333334) internal successors, (1121), 6 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:06,000 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:25:06,000 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:06,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 18:25:06,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting reader_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-25 18:25:06,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:06,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2079949502, now seen corresponding path program 1 times [2022-11-25 18:25:06,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:25:06,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255847617] [2022-11-25 18:25:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:06,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:25:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:25:06,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:25:06,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255847617] [2022-11-25 18:25:06,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255847617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:25:06,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:25:06,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 18:25:06,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513936135] [2022-11-25 18:25:06,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:25:06,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:25:06,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:25:06,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:25:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:25:07,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 442 [2022-11-25 18:25:07,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 627 transitions, 6122 flow. Second operand has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:07,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:25:07,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 442 [2022-11-25 18:25:07,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:25:11,366 INFO L130 PetriNetUnfolder]: 4454/14124 cut-off events. [2022-11-25 18:25:11,367 INFO L131 PetriNetUnfolder]: For 61791/62735 co-relation queries the response was YES. [2022-11-25 18:25:11,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51913 conditions, 14124 events. 4454/14124 cut-off events. For 61791/62735 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 131817 event pairs, 591 based on Foata normal form. 183/13543 useless extension candidates. Maximal degree in co-relation 51879. Up to 6202 conditions per place. [2022-11-25 18:25:11,507 INFO L137 encePairwiseOnDemand]: 428/442 looper letters, 459 selfloop transitions, 149 changer transitions 0/819 dead transitions. [2022-11-25 18:25:11,508 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 819 transitions, 9464 flow [2022-11-25 18:25:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:25:11,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:25:11,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1486 transitions. [2022-11-25 18:25:11,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5603318250377074 [2022-11-25 18:25:11,521 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1486 transitions. [2022-11-25 18:25:11,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1486 transitions. [2022-11-25 18:25:11,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:25:11,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1486 transitions. [2022-11-25 18:25:11,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 247.66666666666666) internal successors, (1486), 6 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:11,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:11,557 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 442.0) internal successors, (3094), 7 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:11,566 INFO L175 Difference]: Start difference. First operand has 174 places, 627 transitions, 6122 flow. Second operand 6 states and 1486 transitions. [2022-11-25 18:25:11,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 819 transitions, 9464 flow [2022-11-25 18:25:11,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 819 transitions, 9256 flow, removed 104 selfloop flow, removed 0 redundant places. [2022-11-25 18:25:11,816 INFO L231 Difference]: Finished difference. Result has 183 places, 771 transitions, 8386 flow [2022-11-25 18:25:11,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=5914, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8386, PETRI_PLACES=183, PETRI_TRANSITIONS=771} [2022-11-25 18:25:11,818 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 68 predicate places. [2022-11-25 18:25:11,822 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 771 transitions, 8386 flow [2022-11-25 18:25:11,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 230.83333333333334) internal successors, (1385), 6 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:11,824 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:25:11,824 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:11,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 18:25:11,825 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-25 18:25:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash -448997761, now seen corresponding path program 1 times [2022-11-25 18:25:11,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:25:11,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576680157] [2022-11-25 18:25:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:11,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:25:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:25:14,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:25:14,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576680157] [2022-11-25 18:25:14,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576680157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:25:14,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:25:14,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 18:25:14,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042346479] [2022-11-25 18:25:14,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:25:14,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 18:25:14,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:25:14,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 18:25:14,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-25 18:25:22,568 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 442 [2022-11-25 18:25:22,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 771 transitions, 8386 flow. Second operand has 14 states, 14 states have (on average 203.07142857142858) internal successors, (2843), 14 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:22,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:25:22,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 442 [2022-11-25 18:25:22,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:25:33,038 INFO L130 PetriNetUnfolder]: 9040/27442 cut-off events. [2022-11-25 18:25:33,039 INFO L131 PetriNetUnfolder]: For 112626/114407 co-relation queries the response was YES. [2022-11-25 18:25:33,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104747 conditions, 27442 events. 9040/27442 cut-off events. For 112626/114407 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 287191 event pairs, 986 based on Foata normal form. 440/26345 useless extension candidates. Maximal degree in co-relation 104708. Up to 7310 conditions per place. [2022-11-25 18:25:33,287 INFO L137 encePairwiseOnDemand]: 411/442 looper letters, 1035 selfloop transitions, 287 changer transitions 0/1532 dead transitions. [2022-11-25 18:25:33,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 1532 transitions, 18695 flow [2022-11-25 18:25:33,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 18:25:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-25 18:25:33,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4760 transitions. [2022-11-25 18:25:33,304 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48951048951048953 [2022-11-25 18:25:33,304 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4760 transitions. [2022-11-25 18:25:33,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4760 transitions. [2022-11-25 18:25:33,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:25:33,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4760 transitions. [2022-11-25 18:25:33,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 216.36363636363637) internal successors, (4760), 22 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:33,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 442.0) internal successors, (10166), 23 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:33,342 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 442.0) internal successors, (10166), 23 states have internal predecessors, (10166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:33,343 INFO L175 Difference]: Start difference. First operand has 183 places, 771 transitions, 8386 flow. Second operand 22 states and 4760 transitions. [2022-11-25 18:25:33,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 1532 transitions, 18695 flow [2022-11-25 18:25:33,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1532 transitions, 18593 flow, removed 51 selfloop flow, removed 0 redundant places. [2022-11-25 18:25:33,804 INFO L231 Difference]: Finished difference. Result has 224 places, 1007 transitions, 12813 flow [2022-11-25 18:25:33,805 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=442, PETRI_DIFFERENCE_MINUEND_FLOW=8332, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=771, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=12813, PETRI_PLACES=224, PETRI_TRANSITIONS=1007} [2022-11-25 18:25:33,806 INFO L288 CegarLoopForPetriNet]: 115 programPoint places, 109 predicate places. [2022-11-25 18:25:33,806 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 1007 transitions, 12813 flow [2022-11-25 18:25:33,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 203.07142857142858) internal successors, (2843), 14 states have internal predecessors, (2843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:33,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:25:33,808 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:33,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:25:33,808 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting reader_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_fnErr6ASSERT_VIOLATIONDATA_RACE, reader_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_fnErr7ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2022-11-25 18:25:33,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:33,808 INFO L85 PathProgramCache]: Analyzing trace with hash -843158921, now seen corresponding path program 2 times [2022-11-25 18:25:33,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:25:33,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148881362] [2022-11-25 18:25:33,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:33,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:25:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:38,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:25:38,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:25:38,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148881362] [2022-11-25 18:25:38,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148881362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:25:38,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:25:38,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-25 18:25:38,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505059916] [2022-11-25 18:25:38,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:25:38,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 18:25:38,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:25:38,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 18:25:38,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2022-11-25 18:25:46,721 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 442 [2022-11-25 18:25:46,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 1007 transitions, 12813 flow. Second operand has 20 states, 20 states have (on average 169.3) internal successors, (3386), 20 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:46,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:25:46,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 442 [2022-11-25 18:25:46,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand